Hi, im pretty good with problems but this one is doing my head in now. the problem is im not sure what the actual problem is. the symptoms include corrupted desktop display, game crashing, corrupted firefox display. these symptoms are not continual and dont appear after boot up. ati smartgart reports agp is off, adjusting it makes no difference the system is old but has been very reliable. mobo is asrock 775i65gv with onboard vga cpu dual core intel 2.8 mem 2gb o/s xp pro sp3 graphics card ati radeon 9250 256mb agp 8 directx 9 all drivers are current including chipset drivers things ive done. reinstalled graphics card and drivers and onboard vga drivers. ive tried using the onboard vga without the radeon installed but have same problem. have disconnected all usb devices, but no change. have tried 2 other hdds with xp pro o/s and still have the problem. this makes me think its a hardware problem, mobo perhaps have checked forums but no help. anyone have any idea any help would be appreciated its got me baffled. the worst symptoms are when trying to start games, and these games are old and according to their requirements this system is well above the recommended. they recommend pentium 2 or above, thats how old they are,lol oh and I have a superfast modern pc, but this one was the first I built so it has sentimental value, hence not keen on scrapping.